PROGRIP 902500 Top Loader Tie down strap enabled to be bolted or welded to a top loading truck or cargo rack, ideal for construction work or occasional use by truck owners Constructed with zinc plating to help prevent corrosion and yellow strap measures 8' long and 1 1/2" wide Strap made with polyester webbing that resists mildew, UV rays, shrinkage and prevents stretching when wet; supports 500-pound working load limit and has a 1500-pound breaking strength When attached to cargo rack simply unhook strap while unravelling enough to fit around desired item, hook onto one of two built-in attachment points, and take up slack with the large easy-twist knob Tie down features 3 ways to tighten load using 5/16" diameter rod, 3/4" wrench, or 3/8" drive socket wrench (tools not included); comes with round tubing adapter in packing to help mount cargo rack